Albert D J, Jonik R H, Walsh M L
Psychology Department, University of British Columbia, Vancouver, Canada.
Physiol Behav. 1992 Dec;52(6):1043-6. doi: 10.1016/0031-9384(92)90457-d.
Nulliparous female hooded rats were allowed to cohabit with a sexually active male in a large living cage. Aggression toward an unfamiliar female was assessed during the second and third week of pregnancy. Within 12 to 24 h following parturition females were ovariectomized (n = 7) or sham-ovariectomized (n = 6) in a manner that balanced previous aggression scores. Aggression was assessed at 48 h following ovariectomy and at three weekly intervals thereafter. Ovariectomized and sham-ovariectomized females did not differ in the number of attacks, number of bites, duration of on-top, or frequency of piloerection on any test day following parturition. These results indicate that circulating levels of ovarian steroids do not influence the level of aggression by a primiparous lactating female toward an unfamiliar female conspecific.
未生育的雌性带帽大鼠被允许在一个大的生活笼中与一只性活跃的雄性大鼠同居。在怀孕的第二和第三周评估对陌生雌性的攻击性。分娩后12至24小时内，对雌性大鼠进行卵巢切除（n = 7）或假卵巢切除（n = 6），切除方式使先前的攻击得分达到平衡。在卵巢切除后48小时及之后每隔一周评估一次攻击性。在分娩后的任何测试日，卵巢切除的雌性大鼠和假卵巢切除的雌性大鼠在攻击次数、咬伤次数、骑跨持续时间或竖毛频率方面均无差异。这些结果表明，卵巢类固醇的循环水平不会影响初产哺乳期雌性大鼠对陌生同种雌性大鼠的攻击水平。
